Dewberry Cobbler 12-inch Dutch Oven Filling: 2 cans (approx 4 cups) frozen dewberries and 2 packages fresh Sugar to taste (1-2cups). You may substitute with fresh or frozen blackberries.Mix dewberries and sugar. This mixture should be enough to cover a 12-inch Dutch oven 2 inches deep. Cook this mixture until syrupy. Crust: 1/2 cup butter 1/2 cup Crisco 2 cups flour Cut butter and Crisco into flour. Add ice water. Mix until crust is crumbly. You may need to add more flour. Don't roll out! Sprinkle or crumble over dewberry and sugar mixture. Sprinkle 1/4 cup sugar over top. Cover Dutch oven and put coals on lid. Cook 10-12 minutes or until crust is brown. Bake in 375 F oven for 20-25 minutes. Serves 10